So I got a Kenwood KDC-X991, which with the add-on, will accept bluetooth and allow you to hear the person your talking to over the speakers. I just picked up a new cell phone, LG Voyager if it makes a difference, and it has turn by turn navigation with it. I was wondering, if I use the navigation and it's connected to my radio will I hear the voice over my music, or will I only hear it on the phone speakers?

Also, for those of you who have the aftermarket radio, and have gotten the bluetooth, how pleased are you with the set up?